CN103244448B - Natural wind simulating fan and method - Google Patents
Natural wind simulating fan and method Download PDFInfo
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- CN103244448B CN103244448B CN201310191716.XA CN201310191716A CN103244448B CN 103244448 B CN103244448 B CN 103244448B CN 201310191716 A CN201310191716 A CN 201310191716A CN 103244448 B CN103244448 B CN 103244448B
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- wind
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Abstract
A natural wind simulating fan comprises a single-chip microcomputer, a maximum wind-speed setting potentiometer, a wind speed fluctuation range setting potentiometer, a direct-current chopper control circuit, a magnetic saturation controllable electric reactor, a fan motor and a direct-current power source. The invention further discloses a natural wind simulating method which includes: initializing; reading maximum wind speed and wind speed fluctuation range setting values; randomly confirming preset time duration and target value of a wind speed control section and a wind speed changing mode of the section; and timing the wind speed control section, calculating a wind speed set value of the fan according to the confirmed wind speed changing mode, converting the wind speed set value of the fan into pulse-width modulation (PWM) pulse signals to output and the like. The natural wind simulating fan and method simulates the natural wind by using a magnetic saturation controllable electric reactor and common single-phase asynchronous motor series connection speed adjusting method, the natural wind can be simulated easily, harmonic pollution on a power grid cannot be caused, and the maximum wind speed and the wind speed fluctuation range of the natural wind can be set through the potentiometer.
Description
Technical field
The present invention relates to a kind of fan, especially a kind of can the fan of natural wind simulating and the method for natural wind simulating.
Background technology
At present, the conventional fan used in indoor environment only has simple stepping speed-regulating function, and mode is dull, and comparatively large with Difference of physical environment, blowing feeling is poor, the sensation that long-time easily generation blowing is uncomfortable; There is automatically adjustment with the fan of controlling functions or only by built-in curvilinear motion, or only control according to the change of temperature, many-sided demand can not be met.
The patent " electronic timing electric fan simulating natural wind control device " of application number 91211765.6, the patent " natural wind simulating controller " of application number 90209401.7, the patent " natural wind simulating controller for fan " of application number 91214603.6, adopt simple electronic circuit control wind speed size and time, control motor speed by frequency conversion velocity modulation mode to change, just achieve the elementary simulation of natural wind, have very big difference with real natural wind; Silicon-controlled voltage regulation mode speed governing, can make electrical network sine waveform distort, bring larger electromagnetic interference simultaneously.
The patent " simulation natural wind controller for electric fan " of application number 201220070500.9 with electronic circuit control fan time turn time stop, can only fitful wind be formed, have gap with real natural wind.
The patent " a kind of energy saving control circuit device be applied on electric fan " of application number 200920050741.5, its natural wind function program mode (PM) realizes, and only has the selection that 9 grades fixing.
The patent " a kind of electric fan with turbulent natural wind " of application number 201020668439.9 and the patent " forming method and the electric fan of natural wind of natural wind " of application number 97116771.0, realize a kind of disorderly natural wind by structure, occupation mode is restricted.
The patent " a kind of control method of comfortable wind of fan " of application number 201210086869.3, by step-wise fashion setting operational mode and wind speed size, mode of operation is complicated; The rate setting that fan speed changes is at the uniform velocity rise or uniform descent, does not meet with the changeable at random of actual natural wind; Adopt DC brushless motor cost high, difficult in maintenance, need to coordinate speed governing with frequency converter.
The patent " a kind of terminal dynamic air of blow of individuation air conditioning system " of application number 200510086921.5 is passed through natural wind, sinusoidal wind, pulse wind, the dynamic wind sample wind velocity signal of RANDOM WIND air-flow stores in memory, single-chip microcomputer reads sample wind velocity signal, direct current brushless motor speed is controlled through voltage amplifier circuit or frequency changer circuit, the natural wind produced only to the sample wind velocity signal that stores in memory relevant, due to limited sample size, the effect of natural wind necessarily periodically repeats, in addition, user cannot change wind speed size and fluctuation range according to self needing.
The patent " a kind of apparatus and method of natural wind simulating " of application number 200810185769.X, multiple natural wind wind speed sample signal is stored with memory, a sample signal is selected to control by random fashion, due to limited sample size, the effect of natural wind is difficult to avoid periodically repeating equally; Adopt closed-loop control can improve the precision of speed governing, but adding of automatic control system also makes the stability of device work decline, probability of malfunction improves, and applies and there is no need in the fan of routine; Adopt DC brushless motor cost high, difficult in maintenance, need to coordinate speed governing with frequency converter; Meanwhile, user also cannot change wind speed size and fluctuation range according to self needing.
The patent " a kind of device based on chaology natural wind simulating " of application number 201010276923.1, realizes natural wind based on chaology, and natural wind effect is better, but whole system is complicated, and cost is high, is not suitable for applying on conventional Ian.
Summary of the invention
The object of the invention is for fan provides a kind of solution producing natural wind, improve the comfort of blowing person.
To achieve these goals, one aspect of the present invention provides a kind of fan of natural wind simulating, comprising:
Fan electromotor; Magnetically controlled saturated reactor, its Working winding is connected to 220V AC power after connecting with described fan electromotor, controls the electric current that its controlled winding flows through and can change the single-phase AC voltage size be added on described fan electromotor, reach the object of speed governing; DC chopped-wave voltage-regulating circuit, it exports the controlled winding being connected to described magnetically controlled saturated reactor, and output voltage is controlled by the pwm pulse inputted; Single-chip microcomputer; Maximum wind velocity setting potentiometer, for being connected to described single-chip microcomputer, the maximum of setting fan electromotor target velocity; Fluctuations in wind speed range set potentiometer, for being connected to described single-chip microcomputer, the minimum of a value of setting fan electromotor target velocity.Described single-chip microcomputer comprises:
Analog-digital converter, converts data signal to for the analog signal described maximum wind velocity setting potentiometer and fluctuations in wind speed range set potentiometer exported; PWM generator, its pwm pulse exported is connected to described DC chopped-wave voltage-regulating circuit, and natural wind data stochastic simulation processing module, for the data signal exported according to described analog-digital converter, adopt time slice mode stochastic simulation natural wind wind velocity signal, wind velocity signal, as the speed preset of described fan electromotor, is sent to described PWM generator and converts pwm pulse output to.
Described fan electromotor is single-phase asynchronous motor, and the structure of described fan is the conventional fan adopting single-phase asynchronous motor.
In addition, the fan of described natural wind simulating also comprises dc source, for providing working power to described single-chip microcomputer, and provides working power and input power to described DC chopped-wave voltage-regulating circuit.
The present invention provides a kind of method of natural wind simulating on the other hand, comprises the following steps: step one, initializes; Step 2, maximum wind velocity setting value is read from maximum wind velocity setting potentiometer, maximum setting range 0 ~ 100%, reads fluctuations in wind speed range set value from fluctuations in wind speed range set potentiometer, and fluctuations in wind speed scope is 0 ~ 100% of the maximum relative to setting; Step 3, determines this section of blast velocity control scheduled time length T by random fashion; Step 4, determines the desired value n of this section of blast velocity control by random fashion
1, the random scope of target velocity is limited by maximum wind velocity setting value and fluctuations in wind speed range set value; Step 5, determine the pattern of this section of wind speed change by random fashion, wind speed changing pattern has 6 kinds, and fan speed set-point n calculates according to following rule respectively, n wherein
0for the initial value of this section of fan speed, t is the timing time variable of this section of time interval, section starting point moment t=0,
Pattern 1, n=n
1;
Pattern 2, n=n
0+ 2 × (n
1-n
0) × (t ÷ T)-(n
1-n
0) × (t ÷ T)
3;
Mode 3, n=n
0+ 2 × (n
1-n
0) × (t ÷ T)-(n
1-n
0) × (t ÷ T)
2;
Pattern 4, n=n
0+ (n
1-n
0) × (t ÷ T);
Pattern 5, n=n
0+ (n
1-n
0) × (t ÷ T)
2;
Pattern 6, n=n
0+ (n
1-n
0) × (t ÷ T)
3;
Step 6, to this section of blast velocity control time timing; Step 7, calculates fan speed set-point by the wind speed changing pattern determined;
Step 8, fan speed set-point is converted to pwm pulse signal and exports; Step 9, when this blast velocity control period, t did not reach scheduled time T, returns step 6, and when t reaches scheduled time T, returns step 2.
Compared with prior art, its beneficial effect is in the present invention: use common single-phase asynchronous motor speed governing to realize natural wind, only need change the speed governing inductance of conventional fan into magnetically controlled saturated reactor, without the need to changing fan structure; The mode speed governing adopting magnetically controlled saturated reactor to connect with single-phase asynchronous motor, can not cause harmonic pollution to electrical network; Maximum wind velocity and the fluctuations in wind speed scope of natural wind can set with potentiometer, and setting means is simple, easily operates; The change of fan speed has various modes, and Stochastic choice; When fluctuations in wind speed scope is set to 0%, fan can realize function of stepless speed regulation.
Accompanying drawing explanation
Fig. 1 is the hardware configuration schematic diagram of the fan according to natural wind simulating of the present invention;
Fig. 2 is the program flow diagram of the method according to natural wind simulating of the present invention;
Fig. 3 is the motor driving principle figure of the fan according to natural wind simulating of the present invention;
Fig. 4 is the circuit diagram of the dc source of fan according to natural wind simulating of the present invention.
Detailed description of the invention
As shown in Figure 1, single-chip microcomputer is the control core of the fan of natural wind simulating, maximum wind velocity setting potentiometer is for setting the maximum wind velocity of natural wind, fluctuations in wind speed range set potentiometer is for setting the fluctuation range of natural wind wind speed, and the analog-digital converter that the setting voltage that two potentiometers export is sent to single-chip microcomputer inside carries out analog-to-digital conversion.
After single-chip microcomputer reads maximum wind velocity setting value, fluctuations in wind speed range set value, analog-to-digital result is sent to natural wind data stochastic simulation processing module, adopt time slice mode stochastic simulation natural wind wind velocity signal, wind velocity signal converts pwm signal to by the PWM generator of single-chip microcomputer inside and exports, and then controlling the speed of fan electromotor, whole process is as shown in Figure 2.
Described employing time slice mode natural wind simulating wind velocity signal, the scheduled time length of segmentation blast velocity control is a variable, the scheduled time length of each section of blast velocity control is all different, the higher limit of scheduled time length and lower limit are determined according to the power, inertia etc. of fan, and random function is the random scheduled time length producing this section of fan speed and control in the scope determined.The blast velocity control desired value of Discrete control time period terminal also adopts random fashion to determine, the random scope of terminal target velocity is limited by maximum wind velocity setting value and fluctuations in wind speed range set value, specifically: the setting value that the maximum of fan electromotor target velocity sets potentiometer by maximum wind velocity limits, maximum setting range 0 ~ 100%; The minimum of a value of target velocity is limited by the setting value of fluctuations in wind speed range set potentiometer, and fluctuations in wind speed scope is 0 ~ 100% of the maximum relative to setting; When fluctuations in wind speed range set value is 0%, fan of the present invention becomes a kind of fan of stepless speed regulation, and fan speed is regulated by maximum wind velocity setting value potentiometer.
Natural wind wind speed changing pattern of the present invention has 6 kinds.Which kind of wind speed changing pattern is this section specifically adopt, and determined by random fashion.After determining the scheduled time length of this section of blast velocity control at random, definition scheduled time length is T, and the timing time variable of this section of time interval is t, section starting point moment t=0; If the initial value of this section of fan speed is n
0, terminal target velocity is n
1; The target velocity n of this section of fan speed
1the initial value n of next section of blast velocity control
0; Which kind of wind speed changing pattern is this section specifically adopt determined by random fashion, and the fan speed set-point n of each wind speed changing pattern calculates according to following rule:
Pattern 1, n=n
1;
Pattern 2, n=n
0+ 2 × (n
1-n
0) × (t ÷ T)-(n
1-n
0) × (t ÷ T)
3;
Mode 3, n=n
0+ 2 × (n
1-n
0) × (t ÷ T)-(n
1-n
0) × (t ÷ T)
2;
Pattern 4, n=n
0+ (n
1-n
0) × (t ÷ T);
Pattern 5, n=n
0+ (n
1-n
0) × (t ÷ T)
2;
Pattern 6, n=n
0+ (n
1-n
0) × (t ÷ T)
3;
Pattern 1 is Spline smoothing, and given speed change is the fastest, and the change of pattern 2 given speed is taken second place, and changing the slowest is pattern 6.
The fan speed change speed of pattern 2 to pattern 6 is also relevant with this section of blast velocity control scheduled time length T produced at random, and T is larger, and fan speed change speed is less.
Fan speed given needs converts pwm control signal output to, within the whole Discrete control time, program is ceaselessly carried out this section of time timing, is converted to the work such as pwm pulse signal output by the wind speed changing pattern calculating fan speed set-point determined, fan speed set-point, until this section of timing time arrives, proceed to the control of next fan speed control time section.
In Fig. 2, the main completion timing device of initialization module of beginning initializes, interrupts initializing and arranging the initial velocity n of fan electromotor
0=0.
As shown in Figure 1, the fan electromotor of natural wind simulating and drive circuit thereof are made up of DC chopped-wave voltage-regulating circuit, magnetically controlled saturated reactor, fan electromotor, and detailed circuit theory as shown in Figure 3.
Fan electromotor, particularly middle low power fan electromotor, consider from the angle of cost and maintenance, substantially adopt single-phase asynchronous motor, use single-phase asynchronous motor speed governing, can carry out under the prerequisite not changing conventional fan structure.The mode speed governing adopting controlled reactor to connect with single-phase asynchronous motor, can not cause harmonic pollution to electrical network.
Variable voltage control is the major way of single-phase asynchronous motor.Fan electromotor M31 is connected to AC220V power supply after connecting with the Working winding of magnetically controlled saturated reactor L31, change the DC voltage on L31 controlled winding, the inductance value of L31 Working winding can be changed, and then change the single-phase AC voltage size be added on fan electromotor M31, reach the object of speed governing.
Driving element IR2121 is the core of DC chopped-wave voltage-regulating circuit.IR2121 working power is 15V; its input IN end institute connect pwm pulse signal by single-chip microcomputer of the present invention PWM generator output; it exports the break-make of OUT end through resistance R31 gauge tap element SenseFET device V31; resistance R32 is connected to the current mirror ratio output of V31; voltage signal on R32 delivers to the CS input of IR2121, plays overcurrent protection.Diode D31 does afterflow, and electric capacity C31, C33 do filtering, and electric capacity C32 determines the overcurrent working time length of device V31.
The input voltage of DC chopped-wave voltage-regulating circuit is+24V, and load is the controlled winding of magnetically controlled saturated reactor L31, after the controlled winding series connection of V31 and L31, is connected to+24V dc source.The break-make ratio of pwm pulse Duty ratio control V31, dutycycle is high, and the ON time accounting of V31 is large, and the electric current flowing through L31 controlled winding is large, and L31 Working winding inductance is little, and fan electromotor M31 speed is high; Pwm pulse dutycycle is low, and the ON time accounting of V31 is little, and the electric current flowing through L31 controlled winding is little, and L31 Working winding inductance is large, and fan electromotor M31 speed is low.
For the dc source in Fig. 1, as shown in Figure 4, after AC transformer step-down, DC voltage is obtained by diode rectification, + 24V DC voltage is obtained by bulky capacitor filtering, should be divided into three tunnels by+24V DC voltage, DC chopped-wave voltage-regulating circuit is delivered on a road, as the input voltage of DC chopped-wave voltage-regulating circuit; + 5V mu balanced circuit is delivered on one road, as input power; + 15V mu balanced circuit is delivered on one road, as input power.+ 5V is the working power of single-chip microcomputer, and the core of its mu balanced circuit is step-down switching regulator TL-2575-5, and C41, C42, L41 are filter elements, and Schottky diode D41 does afterflow; + 15V is the working power of DC chopped-wave driving element IR2121, and the core of its mu balanced circuit is step-down switching regulator TL-2575-15, and C43, C44, L42 are filter elements, and Schottky diode D42 does afterflow.
For the natural wind in Fig. 1, sent by the fan fan page be arranged in fan electromotor rotating shaft.
The foregoing is only embodiments of the invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within right of the present invention.
Claims (8)
1. a fan for natural wind simulating, is characterized in that, comprising:
Fan electromotor;
Magnetically controlled saturated reactor, its Working winding is connected to 220V AC power after connecting with described fan electromotor, controls the electric current that its controlled winding flows through and can change the single-phase AC voltage size be added on described fan electromotor, reach the object of speed governing;
DC chopped-wave voltage-regulating circuit, it exports the controlled winding being connected to described magnetically controlled saturated reactor, and output voltage is controlled by the pwm pulse inputted;
Single-chip microcomputer;
Maximum wind velocity setting potentiometer, for being connected to described single-chip microcomputer, the maximum of setting fan electromotor target velocity;
Fluctuations in wind speed range set potentiometer, for being connected to described single-chip microcomputer, the minimum of a value of setting fan electromotor target velocity;
Described single-chip microcomputer comprises:
Analog-digital converter, converts data signal to for the analog signal described maximum wind velocity setting potentiometer and fluctuations in wind speed range set potentiometer exported,
PWM generator, its PWM pulse exported is connected to described DC chopped-wave voltage-regulating circuit, and
Natural wind data stochastic simulation processing module, for the data signal exported according to described analog-digital converter, adopt time slice mode stochastic simulation natural wind wind velocity signal, wind velocity signal, as the speed preset of described fan electromotor, is sent to described PWM generator and converts pwm pulse output to.
2. the fan of natural wind simulating according to claim 1, is characterized in that, also comprises: dc source, for providing working power to described single-chip microcomputer, and provides working power and input power to described DC chopped-wave voltage-regulating circuit.
3. the fan of natural wind simulating according to claim 2, is characterized in that, described fan electromotor is single-phase asynchronous motor.
4. the fan of natural wind simulating according to claim 2, is characterized in that, the structure of described fan is conventional fan.
5. the fan of natural wind simulating according to claim 2, is characterized in that, the switch element of described DC chopped-wave voltage-regulating circuit is SenseFET device.
6. the fan of natural wind simulating according to claim 2, is characterized in that, the driving element of described DC chopped-wave voltage-regulating circuit breaker in middle element is IR2121.
7. a method for natural wind simulating, is characterized in that, the following steps that the fan comprising the natural wind simulating utilized according to any one of claim 1 to 6 performs:
Step one, initializes;
Step 2, reads maximum wind velocity setting value, maximum setting range 0 ~ 100% from maximum wind velocity setting potentiometer; Read fluctuations in wind speed range set value from fluctuations in wind speed range set potentiometer, fluctuations in wind speed scope is 0 ~ 100% of the maximum relative to setting;
Step 3, determines this section of blast velocity control scheduled time length by random fashion
t;
Step 4, determines the desired value of this section of blast velocity control by random fashion
n 1, the random scope of target velocity is limited by maximum wind velocity setting value and fluctuations in wind speed range set value;
Step 5, determine the pattern of this section of wind speed change by random fashion, wind speed changing pattern has 6 kinds, each pattern fan speed set-point
ncalculate according to following rule respectively, wherein
n 0for the initial value of this section of fan speed,
tfor the timing time variable of this section of time interval, the section starting point moment
t=0,
Pattern 1,
n=
n 1;
Pattern 2,
n=
n 0+ 2 × (
n 1-
n 0) × (
t÷
t)-(
n 1-
n 0) × (
t÷
t)
3;
Mode 3,
n=
n 0+ 2 × (
n 1-
n 0) × (
t÷
t)-(
n 1-
n 0) × (
t÷
t)
2;
Pattern 4,
n=
n 0+ (
n 1-
n 0) × (
t÷
t);
Pattern 5,
n=
n 0+ (
n 1-
n 0) × (
t÷
t)
2;
Pattern 6,
n=
n 0+ (
n 1-
n 0) × (
t÷
t)
3;
Step 6, to this section of blast velocity control time timing;
Step 7, calculates fan speed set-point by the wind speed changing pattern determined;
Step 8, fan speed set-point is converted to pwm pulse signal and exports;
Step 9, when this blast velocity control period
tdo not reach the scheduled time
ttime, return step 6, and work as
treach the scheduled time
ttime, return step 2.
8. the method for natural wind simulating according to claim 7, is characterized in that, when described fluctuations in wind speed range set value is 0%, fan speed carries out step-less adjustment by maximum wind velocity setting value potentiometer.
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|---|---|---|---|
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|---|---|---|---|
| CN201310191716.XA CN103244448B (en) | 2013-05-22 | 2013-05-22 | Natural wind simulating fan and method |
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| CN103244448B true CN103244448B (en) | 2015-03-25 |
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| CN103994089B (en) * | 2014-05-22 | 2015-12-09 | 湖南工业大学 | A kind of random variable wind fan and random variable wind production method |
| CN105179283A (en) * | 2015-07-22 | 2015-12-23 | 广西大学 | Electric fan capable of simulating natural wind |
| CN105912041A (en) * | 2015-10-15 | 2016-08-31 | 深圳和而泰智能控制股份有限公司 | Natural wind simulation device and method |
| CN106949080B (en) * | 2017-03-21 | 2018-09-28 | 莱克电气股份有限公司 | A kind of method and apparatus of natural wind simulating |
| CN107387447B (en) * | 2017-07-31 | 2019-06-11 | 广东美的环境电器制造有限公司 | Control method for fan, fan control system and fan component |
| CN109893417A (en) * | 2019-03-13 | 2019-06-18 | 广东斐瑞智能技术有限公司 | It is a kind of to massage and aesthetic nursing device and control method |
| CN109827742B (en) * | 2019-03-21 | 2020-09-08 | 沈阳航空航天大学 | Natural wind simulation method for wind erosion wind tunnel experiment |
| CN111120373B (en) * | 2020-01-02 | 2021-07-20 | 上海理工大学 | Natural wind simulating fan and natural wind simulating method |
| CN111520351B (en) * | 2020-03-31 | 2022-07-08 | 佛山市云米电器科技有限公司 | Air outlet form distribution method and system of air outlet section and computer readable storage medium |
| CN111425441B (en) * | 2020-03-31 | 2022-04-01 | 佛山市云米电器科技有限公司 | Distribution updating method and system of air outlet section and computer readable storage medium |
| CN111894886A (en) * | 2020-08-07 | 2020-11-06 | 青岛易来智能科技股份有限公司 | Natural wind output method, fan lamp, storage medium, and electronic device |
| CN114183384A (en) * | 2021-11-24 | 2022-03-15 | 武汉理工大学 | Uniform wind simulation loading system and method |
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